From 5ca9aeb4d32229cb06c9e65a96a210c0c8fb2c3f Mon Sep 17 00:00:00 2001
From: Azarasi <siro.azarasi3@gmail.com>
Date: Sun, 22 Sep 2024 21:13:51 +0900
Subject: [PATCH] Fix coverage

Remove unused method
---
 .../HelperTests/SyntaxTreeHelpersTests.cs     | 21 ++++++++++
 .../NamingRules/SA1313UnitTests.cs            | 41 ++++++++++++++++++-
 .../Helpers/SyntaxTreeHelpers.cs              | 18 --------
 3 files changed, 60 insertions(+), 20 deletions(-)
 create mode 100644 StyleCop.Analyzers/StyleCop.Analyzers.Test/HelperTests/SyntaxTreeHelpersTests.cs

diff --git a/StyleCop.Analyzers/StyleCop.Analyzers.Test/HelperTests/SyntaxTreeHelpersTests.cs b/StyleCop.Analyzers/StyleCop.Analyzers.Test/HelperTests/SyntaxTreeHelpersTests.cs
new file mode 100644
index 000000000..164c9ef3e
--- /dev/null
+++ b/StyleCop.Analyzers/StyleCop.Analyzers.Test/HelperTests/SyntaxTreeHelpersTests.cs
@@ -0,0 +1,21 @@
+// Copyright (c) Tunnel Vision Laboratories, LLC. All Rights Reserved.
+// Licensed under the MIT License. See LICENSE in the project root for license information.
+
+#nullable disable
+
+namespace StyleCop.Analyzers.Test.HelperTests
+{
+    using Microsoft.CodeAnalysis;
+    using StyleCop.Analyzers.Helpers;
+    using Xunit;
+
+    public class SyntaxTreeHelpersTests
+    {
+        [Fact]
+        public void TestContainsUsingAliasArgumentIsNull()
+        {
+            SyntaxTree tree = null;
+            Assert.False(tree.ContainsUsingAlias(null));
+        }
+    }
+}
diff --git a/StyleCop.Analyzers/StyleCop.Analyzers.Test/NamingRules/SA1313UnitTests.cs b/StyleCop.Analyzers/StyleCop.Analyzers.Test/NamingRules/SA1313UnitTests.cs
index d9d253779..31e2fc120 100644
--- a/StyleCop.Analyzers/StyleCop.Analyzers.Test/NamingRules/SA1313UnitTests.cs
+++ b/StyleCop.Analyzers/StyleCop.Analyzers.Test/NamingRules/SA1313UnitTests.cs
@@ -594,12 +594,49 @@ public async Task TestMethodParameterNamedDoubleUnderscoreAsync()
         {
             var testCode = @"public class TypeName
 {
-    public void MethodName(int __)
+    public void MethodName(int __, int _)
     {
     }
 }";
 
-            DiagnosticResult expected = Diagnostic().WithArguments("__").WithLocation(3, 32);
+            DiagnosticResult[] expected =
+            {
+                Diagnostic().WithArguments("__").WithLocation(3, 32),
+                Diagnostic().WithArguments("_").WithLocation(3, 40),
+            };
+            await VerifyCSharpDiagnosticAsync(testCode, expected, CancellationToken.None).ConfigureAwait(false);
+        }
+
+        [Fact]
+        [WorkItem(2974, "https://github.com/DotNetAnalyzers/StyleCopAnalyzers/issues/2974")]
+        public async Task TestMethodParameterNamedIncrementUnderscoreAsync()
+        {
+            var testCode = @"public class TypeName
+{
+    public void MethodName(int _, int __, int ___)
+    {
+    }
+}";
+            await VerifyCSharpDiagnosticAsync(testCode, DiagnosticResult.EmptyDiagnosticResults, CancellationToken.None).ConfigureAwait(false);
+        }
+
+        [Fact]
+        [WorkItem(2974, "https://github.com/DotNetAnalyzers/StyleCopAnalyzers/issues/2974")]
+        public async Task TestMethodParameterNamedIrregularUnderscoreAsync()
+        {
+            var testCode = @"public class TypeName
+{
+    public void MethodName1(int __, int _) { }
+    public void MethodName2(int _, int ___, int __) { }
+}";
+
+            DiagnosticResult[] expected =
+            {
+                Diagnostic().WithArguments("__").WithLocation(3, 33),
+                Diagnostic().WithArguments("_").WithLocation(3, 41),
+                Diagnostic().WithArguments("___").WithLocation(4, 40),
+                Diagnostic().WithArguments("__").WithLocation(4, 49),
+            };
             await VerifyCSharpDiagnosticAsync(testCode, expected, CancellationToken.None).ConfigureAwait(false);
         }
 
diff --git a/StyleCop.Analyzers/StyleCop.Analyzers/Helpers/SyntaxTreeHelpers.cs b/StyleCop.Analyzers/StyleCop.Analyzers/Helpers/SyntaxTreeHelpers.cs
index 6c90a1733..70ca30828 100644
--- a/StyleCop.Analyzers/StyleCop.Analyzers/Helpers/SyntaxTreeHelpers.cs
+++ b/StyleCop.Analyzers/StyleCop.Analyzers/Helpers/SyntaxTreeHelpers.cs
@@ -73,24 +73,6 @@ public static bool IsWhitespaceOnly(this SyntaxTree tree, CancellationToken canc
                 && TriviaHelper.IndexOfFirstNonWhitespaceTrivia(firstToken.LeadingTrivia) == -1;
         }
 
-        /// <summary>
-        /// Recursively descends through the tree structure, enumerating all Statement nodes encountered during the traversal.
-        /// </summary>
-        /// <param name="syntaxNode">The syntax node to recursively.</param>
-        /// <returns>Enumerated StatementSyntax.</returns>
-        public static IEnumerable<StatementSyntax> StatementDescendRecursively(this SyntaxNode syntaxNode)
-        {
-            foreach (var statement in syntaxNode.ChildNodes().OfType<StatementSyntax>())
-            {
-                yield return statement;
-
-                foreach (var innerItem in StatementDescendRecursively(statement))
-                {
-                    yield return innerItem;
-                }
-            }
-        }
-
         /// <summary>
         /// Recursively descends through the tree structure, enumerating all Expression nodes encountered during the traversal.
         /// </summary>